Java 实例 - 数组排序及元素查找

/*
 author by w3cschool.cc
 文件名：MainClass.java 
 */import java.util.Arrays;public class MainClass {
   public static void main(String args[]) throws Exception {
      int array[] = { 2, 5, -2, 6, -3, 8, 0, -7, -9, 4 };
      Arrays.sort(array);
      printArray("数组排序结果为", array);
      int index = Arrays.binarySearch(array, 2);
      System.out.println("元素 2  在第 " + index + " 个位置");
   }
   private static void printArray(String message, int array[]) {
      System.out.println(message      + ": [length: " + array.length + "]");
      for (int i = 0; i < array.length; i++) {
         if(i != 0){
            System.out.print(", ");
         }
         System.out.print(array[i]);                     
      }
      System.out.println();
   }}